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kateinoigakukun/CodePiece.swift

Created February 22, 2018 00:42
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こういうのを求めてる #CodePiece
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CodePiece.swift
protocol Nouns {}
protocol Verb {}
struct I: Nouns {}
struct Play: Verb, Nouns {}
struct Tennis: Nouns {}
struct Love: Verb {}
struct SVO<S: Nouns, V: Verb, O: Nouns> {
init(s: S, v: V, o: O) {}
}
let phrase1 = SVO(s: I(), v: Play(), o: Tennis())
let phrase2 = SVO(s: I(), v: Love(), o: Tennis())
let phrase3 = SVO(s: Play(), v: I(), o: Love()) // compile error
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